James Murphy and a new concert doc reflect on the end of LCD Soundsystem

In the film and in conversation, Murphy is ever aware of his comparatively advanced age. At its most basic level, his rejection of the rock & roll lifestyle is a question of self-preservation. Every time he tours, Murphy says in the film, he returns with markedly more gray hair. "That's the visible sign," he says. "What's going on inside? I don't want to, like, die." He pauses a beat, then says more firmly, "I don't want to die!"

"Health is a big reason [to end LCD]," Murphy says today. "Life is a big reason. I didn't live a normal life for a long time. I toured and made records and toured and made records. I didn't want to be stuck being in a professional band and not having a life."

Not that he has exactly been a homebody since the days chronicled in the film. He went to Sundance to promote this movie and another, The Comedy, in which he acts. He went to London to work on the Shut Up sound mix. He has myriad projects in some state of development, including a boutique in Brooklyn and a disco-themed exhibit at MOCA's Geffen Contemporary, scheduled to open in fall of 2013. "I don't know quite what my role is," Murphy admits. He adds dryly, "I can't compare it to my previous curatorial work."